CN101929124A - Performance measurement method of vehicle-carried rut meter - Google Patents
Performance measurement method of vehicle-carried rut meter Download PDFInfo
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Abstract
The invention provides a performance measurement method of a vehicle-carried rut meter, comprising the steps of: 101, establishing an indoor ground comprising a rut model placing area and a vehicle placing area; 102, establishing an indoor static rut model in the rut model placing area, carrying out rut depth measurement on the static rut model by the vehicle-carried rut meter and acquiring the static measurement data so as to obtain a static measurement error; 103, selecting an outdoor measurement road; 104, establishing an outdoor dynamic rut model on the outdoor measurement road, carrying out rut depth measurement on the dynamic rut model by the vehicle-carried rut meter and acquiring the dynamic measurement data so as to obtain a dynamic measurement error; and 105, evaluating the performance level of the vehicle-carried rut meter according to the static measurement error and the dynamic measurement error. The performance measurement method of the vehicle-carried rut meter of the invention can scientifically, rationally and correctly measure, detect and evaluate the performances of various vehicle-carried rut meters, and is convenient to implement and beneficial for popularization; therefore, the measurement cost is reduced.
Description
Technical field
The present invention relates to a kind of performance method of measurement, particularly a kind of performance method of measurement of vehicular rut instrument.
Background technology
Highway is important communications and transportation infrastructure, is one of the national economic development " artery ", and for a long time, particularly Gai Gekaifang two more than ten years, highway transportation is continuing, stablize, developing in a healthy way and made important contribution of national economy.Along with China's sustainable development of economy, the passenger and freight transportation flow sharply enlarges, and requires to continue to enlarge the road project scale.The task and goal of the road project of field of traffic is: accelerate to build speedway He Guo and economize main line (five national trunk highways running from north to south and seven running from west to east, " 7918 " engineering), greatly develop rural highway, advance China's communications and transportation modernization.To the end of the year 2008, the speedway mileage open to traffic has surpassed 60,000 kilometers, leaps to the second place of the world, in the semicentennial development course of developed country of having passed by of short 20 years time; Meanwhile, Eleventh Five-Year Plan Country Road Construction " hundred billion yuan of engineerings " and " sensible engineering " are also being vigorously implemented and are being advanced, and the Country Road Construction scale will reach 810,000 Km.To in the so short time, build up so many highway mileage number, how is its engineering construction quality identified? how to guarantee workmanship? the road technology status in the dynamic monitoring operation process how? have only by every quality or technical indicator and detect highway construction, the data that detect are analyzed and handled, quality or technical indicator are made evaluation, the problem that highway construction quality or technology status exist in could in time finding to build, in the operation, and in time handle.
Huge highway construction scale has sharply increased the demand to engineering construction quality and operation road technology status supervision detection, has also spurred the market demand that each highway construction index detecting instrument is developed and sold simultaneously.And safe, convenient, comfortable, environmental protection, energy-conservation road construction and operation developing direction testing has proposed higher professional measurement criteria to highway construction, the Important Project accident treatment has also proposed new requirement to the professional Measuring and testing of road construction and operation.At present domestic at the highway construction detection range, can have multiplely to the instrument that same index detects, how the manufacturer of every kind of instrument also has house.
In putting into practice work, the professional detecting instrument equipment of a lot of transportation industries is used by unit in charge of construction, supervisor, detection unit and production unit simultaneously, do not satisfy requirement as the metering performance of instrument own, just can't guarantee the unity of each tame testing result measurement unit and the accurate reliability of value.Therefore make the testing result of constituent parts not have comparativity, can't truly reflect qualified degree, the mass defect of workmanship index and technology status.This stays many hidden danger will for construction quality, traffic management level and the highway traffic safety etc. of highway engineering, even the consequence of bringing on a disaster property, national interests and people's lives and properties are on the hazard and damage, China builds a harmonious socialist society and the basic demand of transportation industry " people-oriented " theory thereby deviate from.According to preresearch estimates, only the accumulative investment scale of China's freeway net construction just will be above 3.5 trillion yuan RMB to the year two thousand twenty, add millions of kilometers common road net and urban road, its formed national assets scale will be a surprising numeral, and guarantee that engineering construction quality that huge size like this country drops into and good operation must be with the test detecting instrument of all kinds of specialties and the equipment control devices as strictness.
Therefore how science, the metering performance of accurately, reasonably estimating the detecting instrument that uses in the transportation industry have become the problem that transportation industry presses for solution.
The rut degree of depth (road surface through doughnut travel repeatedly roll produce flow deformation, wearing and tearing, depression after, the vertical banded rut groove that on the roadway wheelpath, produces, the rut degree of depth is in millimeter.) be important indicator in the highway construction quality.The apparatus manufacture of the detection pavement track that present domestic engineering is used mainly contains Beijing road emerging technology Co., Ltd, the Shanghai Zhuo is endeavoured a day plant and instrument Co., Ltd, in section be full of permanent Science and Technology Ltd., Beijing star communications and liaison China development in science and technology Co., Ltd, Shanghai Pu Lesi road traffic technology Co., Ltd, Nanjing BiQi Science Co., Ltd, Wuhan Wuda Zoyon Science and Technology Co., Ltd., numerous companies such as RoadMaint (Beijing) Maintenance Technology Co., Ltd., the rut testing instrument equipment of corresponding its production is: the multifunctional laser pavement tester, cross section, ROMDAS ultrasonic wave road surface/rut test macro, 13 laser multifunctional testers, laser rut instrument, the pavement track automatic analyzer, JG-1 laser pavement 3 D intelligent detection system, ZOYON-RTM vehicle intelligent pavement detection system track detection system, multi-functional road conditions fast detecting equipment track detection system etc., what endeavour that day plant and instrument Co., Ltd adopts except that the Shanghai Zhuo is the ultrasonic technology, what other producer adopted all is laser technologies, what most producers adopted is the distance measuring type laser rut instrument of a plurality of laser sensors, and minority is for adopting the image-type rut instrument of line laser.
At present, there are 80～100 covers in the whole nation at all types of rut instrument of usefulness, because shortage technology, the calibrating of these equipment or calibration operation are blank substantially, each participates in the metering performance of the rut instrument of detection and is not estimated scientificly, reasonably and accurately, had a strong impact on the quality that detects data, be unfavorable for carrying out of testing, be unfavorable for the workmanship that is detected is made evaluation.
Summary of the invention
The invention provides a kind of performance method of measurement of vehicular rut instrument, can measure, detect the performance of various vehicular rut instrument scientificly, reasonably and accurately, and be convenient to implement, be beneficial to popularization, thereby reduce measuring cost.
The technical scheme that its technical problem of solution of the present invention is adopted is:
A kind of performance method of measurement of vehicular rut instrument comprises
Step 101 is set up the flooring, comprises rut model put area and vehicle put area;
Step 102, set up the indoor static rut model at the rut model put area, vehicular rut instrument is mounted to testing vehicle, use vehicular rut instrument that static rut model is carried out the rut depth survey and gathered the static measurement data, the rut true value of static measurement data and indoor static rut model is compared, obtain static measurement error;
Step 103 is selected outdoor measurement road;
Step 104, on outdoor measurement road, set up outdoor dynamic rut model, testing vehicle is advanced and is used vehicular rut instrument that dynamic rut model is carried out the rut depth survey and gathered dynamic measuring data, the rut true value of dynamic measuring data and outdoor dynamic rut model is compared, obtain dynamic measurement error;
Step 105 is according to the performance rate of static measurement error and dynamic measurement error evaluation vehicular rut instrument.
Respectively by set up static and dynamic rut model at indoor and outdoors, and use vehicular rut instrument to be detected that this static state and dynamic rut model are carried out the rut depth survey, true value according to survey data and rut model compares, can estimate the measurement performance of this vehicular rut instrument from a plurality of angles such as measurement reproducibility, measure error, survey mark distance, laser point straightness accuracys respectively, and evaluate the measurement performance metering grade of this vehicular rut instrument.
The performance method of measurement of vehicular rut instrument of the present invention, estimate the measurement performance of this vehicular rut instrument respectively from static and dynamic two aspects, measurement parameter is comprehensive, reasonable, and rut model has been simulated real pavement track well, can truly reflect the performance of vehicular rut instrument.In addition, the performance method of measurement of vehicular rut instrument of the present invention provides the performance method of measurement of two cover different conditions, and the user can be selected voluntarily according to applicable cases and test condition, is convenient to implement, be beneficial to popularization, thereby reduces measuring cost.
Description of drawings
Fig. 1 is the schematic flow sheet of the performance method of measurement of vehicular rut instrument of the present invention;
Fig. 2 is the distribution schematic diagram of outdoor dynamic rut model;
Fig. 3 a to Fig. 3 g is the schematic diagram of seven kinds of rut computation models among the JTG E60;
Fig. 4 is the lateral view of the outdoor dynamic rut model among the embodiment one;
Fig. 5 a to Fig. 5 c is the cross sectional representation of first module among the embodiment one;
Fig. 6 is the structural representation of indoor static rut model among the embodiment two.
The specific embodiment
The invention provides a kind of performance method of measurement of vehicular rut instrument, can measure, detect the performance of various vehicular rut instrument scientificly, reasonably and accurately, and be convenient to implement, be beneficial to popularization, thereby reduce measuring cost.
Embodiment one
Fig. 1 is the schematic flow sheet of the performance method of measurement of vehicular rut instrument of the present invention.As shown in Figure 1, the performance method of measurement of vehicular rut instrument of the present invention comprises
Step 101 is set up the flooring, comprises rut model put area and vehicle put area;
Step 102, set up the indoor static rut model at the rut model put area, vehicular rut instrument is mounted to testing vehicle, use vehicular rut instrument that static rut model is carried out the rut depth survey and gathered the static measurement data, the rut true value of static measurement data and indoor static rut model is compared, obtain static measurement error;
Step 103 is selected outdoor measurement road;
Step 104, on outdoor measurement road, set up outdoor dynamic rut model, testing vehicle is advanced and is used vehicular rut instrument that dynamic rut model is carried out the rut depth survey and gathered dynamic measuring data, the rut true value of dynamic measuring data and outdoor dynamic rut model is compared, obtain dynamic measurement error;
Step 105 is according to the performance rate of static measurement error and dynamic measurement error evaluation vehicular rut instrument.
Wherein, step 102 comprises:
Step 102a, use a laths of metal that is of a size of 400cm * 10cm * 3cm to set up zero rut model, this laths of metal is positioned under the laser sensor of vehicular rut instrument, measures the straightness accuracy of the laser point of length spacing between the length spacing between the laser sensor at vehicular rut instrument two ends, per two adjacent laser sensors and each laser sensor;
Wherein, the placement location of this laths of metal is positioned at the rut model put area.Preferably, laths of metal can all have in the center of its positive and negative along the length scale of long axis direction, and the minimum scale of length mark is 0.5mm, and the longest scale mark is 400cm.This laths of metal can be regulated its levelness by three foot screws that are provided with thereunder.
This laths of metal is positioned under the laser sensor of vehicular rut instrument and after opening each laser sensor, the laser point of each laser sensor can be projected to the laths of metal surface.Adjust the position of laths of metal, most of laser point are projected on the length graduation mark of laths of metal.
As requested, greater than 13, if the laser sensor number of vehicular rut instrument to be detected is less than 13, then this vehicular rut instrument does not meet standard-required to present employed vehicular rut instrument according to the individual number average of its laser sensor.Length graduation mark by laths of metal can read the straightness accuracy of the laser measuring point of length spacing between the length spacing between the laser sensor laser measuring point at vehicular rut instrument two ends, per two adjacent laser sensor laser measuring points and each laser sensor respectively.
Can record effective detection width of vehicular rut instrument according to the length spacing between the laser sensor laser measuring point at vehicular rut instrument two ends; The laser point distance of vehicular rut instrument be can record according to the length spacing between per two adjacent laser sensor laser measuring points, average, maximum value, minimum value of laser point distance etc. comprised; Can record the laser point straightness accuracy of vehicular rut instrument according to the position of the laser point of each laser sensor projection.
When maximum and average laser point qualified apart from being smaller or equal to 32cm, when maximum and average laser point distance then are defective during greater than 32cm.
When the straightness accuracy of laser sensor be smaller or equal to 0.1% the time qualified, when the straightness accuracy of laser sensor then is defective greater than 0.1% the time.
Step 102b, under each laser sensor, place a gauge block respectively, use this laser sensor to measure the height and the image data of gauge block, calculate the static measurement error of each laser sensor, with the laser sensor static measurement error of the maximum value in the static measurement error of each laser sensor as vehicular rut instrument.
Utilize the certainty of measurement of each laser sensor of height detection of gauge block.Wherein, gauge block comprises the gauge block that highly is respectively 5mm, 10mm, 15mm, 20mm, 40mm, 80mm.A kind of gauge block of height is positioned at every turn a laser sensor under, use this laser sensor to measure the height and the image data of this gauge block, the difference between measuring height and the gauge block nominal height is the measure error of this laser sensor.Use this laser sensor measure all the height gauge block and calculate its measure error, in regular turn other laser sensor is carried out identical detection step then, draw the static measurement error of each laser sensor.Maximum value in the static measurement error of each laser sensor is the laser sensor static measurement error of vehicular rut instrument.This Static Detection is the independent test to single laser sensor.
Can divide the static measurement performance of vehicular rut instrument according to the laser sensor static measurement error scope of vehicular rut instrument, for example, when error range during at ± 0.3mm, this vehicular rut instrument can be divided into I level measurement level, when error range at ± 0.3mm between ± the 1.0mm time, this vehicular rut instrument can be divided into II level measurement level, and when error range＞± during 1.0mm, then this vehicular rut instrument does not meet the certainty of measurement level, does not recommend to use.
More than be the assessment of carrying out indoor to the static weighing performance of vehicular rut instrument, the effective detection width, laser point that the Static Detection evaluation index mainly comprises vehicular rut instrument is apart from, laser point straightness accuracy and laser sensor measure error.
After carrying out the indoor static measurement, vehicular rut instrument need be loaded on the testing vehicle that travels, thereby its kinetic measurement performance is assessed.
The outdoor measurement road that is used for outdoor kinetic measurement should select top rake to be lower than 1.5%, and the rut value is lower than 10mm, and planeness is lower than 2.0mm/m, and length is longer than 500m, and width is greater than the straight line highway section of 3.80m.Require this straight line highway section not have the intersection, do not have large-scale vibrating factory building or equipment on every side, can be used for test in the closed allround track.
Wherein, step 104 comprises:
Step 104a, at least begin to be provided with one group of outdoor dynamic rut model in the position of 200m in the distance vehicle starting point of advancing, every group of outdoor dynamic rut model comprises at least seven dissimilar outdoor dynamic rut model, each outdoor dynamic rut model is made up of three first modules that are in same measurement road cross section, and these three first modules lay respectively at the two ends and the centre position in this cross section.
Fig. 2 is the distribution schematic diagram of outdoor dynamic rut model.As shown in Figure 2, on the outdoor measurement road of selecting, delimit and measure starting point 202 and terminal point mark 203, wherein, measure starting point 202 and advance more than the starting point 200m apart from vehicle.Testing vehicle begins to give it the gun along the outdoor measurement road bearing of trend from the starting point of advancing, and when it sailed to measurement starting point 202, speed should reach 60km/h.
Testing oneself measures initial point 202 beginnings, along the every interval of road bearing of trend one constant spacing an outdoor dynamic rut model that is provided with along the measurement road cross section is set.This spacing is determined according to the quantity and the measuring distance of every group of outdoor dynamic rut model.For example, measuring distance is 100 meters, and every group is provided with 10 outdoor dynamic rut model, is spaced apart 10 meters between per two adjacent rut model.Each outdoor dynamic rut model is made up of three first modules 201 that are in same cross section, and these three first modules 201 lay respectively at the two ends and the centre position in this cross section.
Every group of outdoor dynamic rut model comprises at least seven dissimilar rut model, and these seven dissimilar rut model are seven kinds of rut computation models being contained among the JTG E60.These seven kinds of rut computation models are shown in Fig. 3 a to Fig. 3 g.
Fig. 4 is the lateral view of outdoor dynamic rut model.As shown in Figure 4, each outdoor dynamic rut model is made up of three first modules 401 that are in same cross section.These three first modules 401 lay respectively at the two ends and the centre position in this cross section.The width of each rut model is 380mm.Height and combination by changing first module 401 realize the variation of rut model type.
Because in the measuring process, measuring vehicle is through each rut model with certain speed, therefore, each has the spacing of 800mm to 1000mm between first module in centre position and first module at two ends, this spacing is passed through for the wheel of measuring vehicle, avoids wheel to roll the rut model module like this and influences the accuracy of measurement.
The length of each first module is 500mm ± 5mm, and width is 600mm ± 5mm, and thickness is 0mm to 55mm, and when the thickness of first module of certain position was 0mm, being this place did not need to place first module.For the ease of being combined to form rut model, shown in Fig. 5 a to Fig. 5 c, the shape of cross section of first module can be included as three kinds of rectangle (T01), trapezoidal (T02) and notch cuttypes (Q01).
In order to satisfy the requirement of different rut forms in " highway subgrade road surface on-the-spot test rules " (JTG E60-2008), investigation is examined the adaptive capacity of equipment, 10 outdoor dynamic rut model can be set, the 10 meters settings at interval of each rut model in every group of outdoor dynamic rut model.Table 1 example of passing the imperial examinations at the provincial level shows the module arrangement mode of one group of outdoor dynamic rut model.Wherein, the form of module numbering is: module type (T01, T02, Q01)-module height.
Table 1 rut module arrangement mode
Step 104b uses the outer dynamically altitude data of rut model of level gauge measuring chamber, 39 points of cross section sampling at each rut model place, the outer dynamically rut degree of depth true value of rut model of counting chamber.
Altitude data with each outdoor dynamic rut model of being provided with among the precision level measuring process 104a that meets the DSZ05 level, the cross section at each rut model place is 39 points of sampling equidistantly, calculate the rut degree of depth of this outdoor dynamic rut model according to altitude data, as rut degree of depth true value.
Step 104c, vehicle is advanced along the outdoor measurement road bearing of trend, uses the duplicate measurements of vehicular rut instrument should organize the outdoor dynamic rut model 10 times and the outer dynamically rut degree of depth of rut model of counting chamber.
Start measuring vehicle, this measuring vehicle is carried vehicular rut instrument and is passed through measured zone with the speed of 60km/h ± 5km/h, and proceeding measurement is also calculated the rut degree of depth that this organizes outdoor dynamic rut model.Be back to the measurement starting point then and remeasure and calculate the rut degree of depth that this organizes outdoor dynamic rut model, 10 times repeatedly.
Step 104d according to the rut degree of depth true value and the measurement gained rut degree of depth of outdoor dynamic rut model, calculates the dynamic measurement error of vehicular rut instrument.
According to the resulting data of step 104c, can detect the rut depth survey repeatability and the rut depth error of vehicular rut instrument.
Wherein, calculate under the condition of speed per hour 60km/h the coefficient of variation C of each rut depth measurements
v, design formulas is as follows:
In this formula (1) and (2): S is repeated standard deviation, and Xi is the i time measurement result of each rut, is the arithmetic mean of instantaneous value of each rut depth measurements.Wherein, the maximum value of the coefficient of variation is the duplicate measurements coefficient of variation of vehicular rut instrument in 10 groups of data.Generally speaking, coefficient of variation C
vShould be not more than 5%.
Calculate under the condition of speed per hour 60km/h, get 10 repeated measuring results (R of each rut model
U) the rut degree of depth (R of average after the reduced parameter conversion
U surveys), calculate rut degree of depth dynamic measurement error according to formula (3).
In this formula: R
U surveysFor measuring the gained rut degree of depth, R
The U markBe rut degree of depth true value, R is the rut depth error.Wherein, the maximum value of rut depth error is the rut depth error of vehicular rut instrument in 10 groups of data.Generally speaking, rut degree of depth dynamic measurement error should be not more than 15%.Can according to measure of precision the kinetic measurement performance divided rank of vehicular rut instrument, for example, when dynamic measurement error＜10%, this vehicular rut instrument can be divided into I level measurement level, when dynamic measurement error 10% between 15% the time, this vehicular rut instrument can be divided into II level measurement level, and when dynamic measurement error＞15%, then this vehicular rut instrument does not meet the certainty of measurement level, does not recommend to use.
Step 104e, the vehicle zero load is advanced along the outdoor measurement road bearing of trend, uses vehicular rut instrument to measure operating range, apart from true value and measurement operating range, calculates vertical distance measuring sensor error according to vehicle ';
Step 104f increases the vehicle seating capacity, and repeating step 104e, seating capacity are respectively 1 people, 2 people and 3 people.
Use total powerstation accurately to determine the starting point and the terminal point in 500 meters highway sections, and mark picture horizontal line.Detect the vehicle zero load and advance, and measure operating range along the measurement road bearing of trend.According to measuring operating range and vehicle ', draw vertical distance measuring sensor error apart from the comparison of true value (500m).And be determined under the different vehicle-mounted number quality vertically distance measuring sensor error and worst error by increasing the vehicle seating capacity.
It is qualified that vertical distance measuring sensor error is smaller or equal to 0.1%, if vertically the distance measuring sensor error is defective greater than 0.1%.
More than be the assessment of carrying out outdoor to the kinetic measurement performance of vehicular rut instrument, the detection of dynamic evaluation index comprises that mainly the rut instrument measures the kinetic measurement repeatability and the dynamic measurement error of the rut degree of depth.
The performance method of measurement of the vehicular rut instrument of present embodiment, adopt small number of modules with discrete form simulation indoor static rut model and outdoor dynamic rut model, because its measurement module is few, measurement environment requires low, therefore be convenient to implement, be beneficial to popularization, thereby reduction measuring cost, can use on a large scale in the whole nation, be convenient to its instrument performance be assessed in local user location.
Embodiment two
Present embodiment and embodiment one different place is the method for building up of rut model, present embodiment is by increasing the quantity of module, the rut model of discrete way among the embodiment one is changed into height continually varying rut model, thereby can simulate actual rut model more exactly, assess the measurement performance of vehicular rut instrument more accurately.
Wherein, in the step 101, the planeness of rut model put area is lower than 2.5mm/m.
Except step 102a and 102b, step 102 further comprises:
Step 102c is with N
1Individual being positioned at second module of the vertically vertical same road Cross Section of road set up a height continually varying indoor static rut model, and per two second adjacent modules are in contact with one another.
Fig. 6 is the structural representation of the indoor static rut model of embodiment two.As shown in Figure 6, each height continually varying indoor static rut model is made up of 15 to 75 second modules 601, and the width of each second module 601 is 5cm to 25cm, highly is 3cm, planeness is less than 0.05mm/m, and thickness error is between-0.2mm to 0.2mm.
The width of second module 601 is to adjust according to the quantity of second module of forming rut model.Owing to be in contact with one another between per two adjacent second modules, therefore when the indoor static rut model is made up of 15 second modules 601, the width of second module 601 should be 25cm, and when the indoor static rut model was made up of 75 second modules 601, the width of second module 601 should be 5cm.
Wherein, the quantity of second module 601 is by the depth value decision of rut model.That is, when the depth value of rut model was big, the quantity of second module 601 just needed to increase, thereby can realize the continuous variation of the rut model degree of depth.
In order to realize the continuous variation of the rut model degree of depth, the difference in height between per two adjacent second modules 601 should be less than 20mm.
Each second module 601 is fixed by 3 foot screws that are located at its below, and foot screw is regulated height and fixing by screwed hole, regulates 3 foot screws and can make second module, 601 levels and regulate its height.The height adjustment range of this foot screw is between 0mm to 60mm.
Step 102d, the altitude data of use level gauge or laser scanner measurement indoor static rut model, the cross section equal interval sampling N at each rut model place
1Individual, the rut degree of depth true value of calculating indoor static rut model.
When using the altitude data of level gauge or laser scanner measurement indoor static rut model, each rut model forms just gather what altitude datas by what second modules, and promptly each second module is measured an altitude data.
The picking rate of laser scanner is higher than level gauge, can select to use level gauge or laser scanner according to test condition and economic condition.
Step 102e uses vehicular rut instrument to measure and calculate the rut degree of depth of this height continually varying indoor static rut model.
Step 102f according to the rut degree of depth true value and the measurement gained rut degree of depth of indoor static rut model, calculates the static measurement error of vehicular rut instrument.
Step 102g changes the rut depth level of this height continually varying indoor static rut model by the height that changes each second module, and repeating step 102c is to step 102f; The rut depth level of indoor static rut model is respectively six groups of 0mm～10mm, 10mm～20mm, 20mm～30mm, 30mm～40mm, 40mm～50mm, 50mm～60mm.
Step 102h changes the rut type of indoor static rut model, repeating step 102c to 102g by the height that changes each second module; Seven kinds of rut model among total " highway subgrade road surface on-the-spot test rules " the JTG E60-2008 shown in Fig. 3 a to Fig. 3 g of the rut type of indoor static rut model.
Can divide the static measurement performance of vehicular rut instrument according to the laser sensor static measurement error scope of vehicular rut instrument, for example, when error range during at ± 0.3mm, this vehicular rut instrument can be divided into I level measurement level, when error range at ± 0.3mm between ± the 1.0mm time, this vehicular rut instrument can be divided into II level measurement level, and when error range＞± during 1.0mm, then this vehicular rut instrument does not meet the certainty of measurement level, does not recommend to use.
More than be the assessment of carrying out indoor to the static weighing performance of vehicular rut instrument, the effective detection width, laser point that the Static Detection evaluation index mainly comprises vehicular rut instrument is apart from, laser point straightness accuracy and laser sensor measure error.
After carrying out the indoor static measurement, vehicular rut instrument need be loaded on the testing vehicle that travels, thereby its kinetic measurement performance is assessed.
The outdoor measurement road that is used for outdoor kinetic measurement should select top rake to be lower than 1.5%, and the rut value is lower than 10mm, and planeness is lower than 2.0mm/m, and length is longer than 500m, and width is greater than the straight line highway section of 3.80m.Require this straight line highway section not have the intersection, do not have large-scale vibrating factory building or equipment on every side, can be used for test in the closed allround track.
The step 104 of outdoor kinetic measurement comprises:
Step 104g, at least begin to be provided with one group of outdoor dynamic rut model of height continually varying in the position of 200m in the distance vehicle starting point of advancing, every group of outdoor dynamic rut model comprises at least seven dissimilar outdoor dynamic rut model, and each outdoor dynamic rut model is by N
2Individual second module that is in same cross section is formed, and per two second adjacent modules are in contact with one another.
Step 104h, the altitude data of use level gauge or the outdoor dynamic rut model of laser scanner measurement, the cross section sampling N at each rut model place
2Individual, the outer dynamically rut degree of depth true value of rut model of counting chamber.
When using the altitude data of level gauge or the outdoor dynamic rut model of laser scanner measurement, each rut model forms just gather what altitude datas by what second modules, and promptly each second module is measured an altitude data.
The picking rate of laser scanner is higher than level gauge, can select to use level gauge or laser scanner according to test condition and economic condition.
Step 104i, vehicle is advanced along the outdoor measurement road bearing of trend, uses the duplicate measurements of vehicular rut instrument should organize the outdoor dynamic rut model 10 times and the outer dynamically rut degree of depth of rut model of counting chamber.
Step 104j according to the rut degree of depth true value and the measurement gained rut degree of depth of outdoor dynamic rut model, calculates the dynamic measurement error of vehicular rut instrument.
Step 104k changes the rut depth level that this organizes outdoor dynamic rut model by the height that changes second module, and repeating step 104g is to step 104j; The rut depth level of outdoor dynamic rut model is respectively six groups of 0mm～10mm, 10mm～20mm, 20mm～30mm, 30mm～40mm, 40mm～50mm, 50mm～60mm.
Step 104l, the vehicle zero load is advanced along the outdoor measurement road bearing of trend, uses vehicular rut instrument to measure operating range, apart from true value and measurement operating range, calculates vertical distance measuring sensor error according to vehicle ';
Step 104m increases the vehicle seating capacity, and repeating step 104l, seating capacity are respectively 1 people, 2 people and 3 people.
Use total powerstation accurately to determine the starting point and the terminal point in 500 meters highway sections, and mark picture horizontal line.Detect the vehicle zero load and advance, and measure operating range along the measurement road bearing of trend.According to measuring operating range and vehicle ', draw vertical distance measuring sensor error apart from the comparison of true value (500m).And be determined under the different vehicle-mounted number quality vertically distance measuring sensor error and worst error by increasing the vehicle seating capacity.
It is qualified that vertical distance measuring sensor error is smaller or equal to 0.1%, if vertically the distance measuring sensor error is defective greater than 0.1%.
More than be the assessment of carrying out outdoor to the kinetic measurement performance of vehicular rut instrument, the detection of dynamic evaluation index comprises that mainly the rut instrument measures the kinetic measurement repeatability and the dynamic measurement error of the rut degree of depth.
Present embodiment is all identical to the processing procedure of the collection of measurement parameter and survey data, its difference be outdoor with indoor rut model to set up mode different.By increasing the quantity of module, the rut model of discrete way among the embodiment one is changed into height continually varying rut model, thereby can simulate actual rut model more exactly, and the data that need gather when vehicular rut instrument calculates the rut degree of depth are more, then this method not only is the calculating of rut value the evaluation emphasis of vehicular rut instrument and more biases toward the collection degree of accuracy to True Data, so the performance method of measurement of present embodiment can be assessed the measurement performance of vehicular rut instrument more accurately.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (11)
1. the performance method of measurement of a vehicular rut instrument comprises
Step 101 is set up the flooring, comprises rut model put area and vehicle put area;
Step 102, set up the indoor static rut model at the rut model put area, vehicular rut instrument is mounted to testing vehicle, use vehicular rut instrument that static rut model is carried out the rut depth survey and gathered the static measurement data, the rut true value of static measurement data and indoor static rut model is compared, obtain static measurement error;
Step 103 is selected outdoor measurement road;
Step 104, on outdoor measurement road, set up outdoor dynamic rut model, testing vehicle is advanced and is used vehicular rut instrument that dynamic rut model is carried out the rut depth survey and gathered dynamic measuring data, the rut true value of dynamic measuring data and outdoor dynamic rut model is compared, obtain dynamic measurement error;
Step 105 is according to the performance rate of static measurement error and dynamic measurement error evaluation vehicular rut instrument.
2. performance method of measurement according to claim 1 is characterized in that step 102 comprises:
Step 102a, use a laths of metal that is of a size of 400cm * 10cm * 3cm to set up zero rut model, this laths of metal is positioned under the laser sensor of vehicular rut instrument, measures the straightness accuracy of the laser measuring point of length spacing between the length spacing between the laser sensor measuring point at vehicular rut instrument two ends, per two adjacent laser sensor measuring points and each laser sensor;
Step 102b, under each laser sensor, place a gauge block respectively, use this laser sensor to measure the height and the image data of gauge block, calculate the static measurement error of each laser sensor, with the laser sensor static measurement error of the maximum value in the static measurement error of each laser sensor as vehicular rut instrument.
3. performance method of measurement according to claim 2 is characterized in that, described gauge block comprises highly being the gauge block of 5mm, 10mm, 15mm, 20mm, 40mm and 80mm.
4. performance method of measurement according to claim 2 is characterized in that, described outdoor measurement road is that top rake is lower than 1.5%, and the rut value is lower than 10mm, and planeness is lower than 2.0mm/m, and length is longer than 500m, and width is more than or equal to the straight line highway section of 3.80m.
5. performance method of measurement according to claim 4 is characterized in that step 104 comprises:
Step 104a, at least begin to be provided with one group of equidistantly outdoor dynamic rut model of being provided with of order in the position of 200m in the distance vehicle starting point of advancing, every group of outdoor dynamic rut model comprises at least seven dissimilar outdoor dynamic rut model, each outdoor dynamic rut model is made up of three first modules that are in same measurement road cross section, and these three first modules lay respectively at the two ends and the centre position in this cross section;
Step 104b uses the outer dynamically altitude data of rut model of level gauge measuring chamber, 39 points of cross section sampling at each rut model place, the outer dynamically rut degree of depth true value of rut model of counting chamber;
Step 104c, vehicle is advanced along the outdoor measurement road bearing of trend, uses the duplicate measurements of vehicular rut instrument should organize the outdoor dynamic rut model 10 times and the outer dynamically rut degree of depth of rut model of counting chamber;
Step 104d according to the rut true value and the measurement gained rut degree of depth of outdoor dynamic rut model, calculates the dynamic measurement error of vehicular rut instrument;
Step 104e, the vehicle zero load is advanced along the outdoor measurement road bearing of trend, uses vehicular rut instrument to measure operating range, apart from true value and measurement operating range, calculates vertical distance measuring sensor error according to vehicle ';
Step 104f increases the vehicle seating capacity, and repeating step 104e, seating capacity are respectively 1 people, 2 people and 3 people.
6. performance method of measurement according to claim 5 is characterized in that,
The width of each outdoor dynamic rut model is 3.80m;
The length of each first module is 500mm ± 5mm, and width is 600mm ± 5mm, and thickness is 0mm to 55mm;
The spacing of dynamic rut model is 10m outside per two adjacent chamber;
The vehicle gait of march is 60km/h ± 5km/h;
The vehicle ' distance is 500m.
7. performance method of measurement according to claim 1 and 2 is characterized in that the planeness of described rut model put area is lower than 2.5mm/m.
8. performance method of measurement according to claim 7 is characterized in that step 102 comprises:
Step 102c is with N
1Individual being positioned at second module of the vertically vertical same road Cross Section of road set up a height continually varying indoor static rut model, and per two second adjacent modules are in contact with one another;
Step 102d uses laser scanner or level gauge to measure the altitude data of indoor static rut model, the cross section equal interval sampling N at each rut model place
1Individual, the rut degree of depth true value of calculating indoor static rut model;
Step 102e uses vehicular rut instrument to measure and calculate the rut degree of depth of this height continually varying indoor static rut model;
Step 102f according to the rut degree of depth true value and the measurement gained rut degree of depth of indoor static rut model, calculates the static measurement error of vehicular rut instrument;
Step 102g changes the rut depth level of this height continually varying indoor static rut model by the height that changes second module, and repeating step 102c is to step 102f; The rut depth level of indoor static rut model is respectively six groups of 0mm～10mm, 10mm～20mm, 20mm～30mm, 30mm～40mm, 40mm～50mm, 50mm～60mm;
Step 102h changes the rut type of indoor static rut model, repeating step 102c to 102g by the height that changes each second module; Seven kinds of rut model among total " highway subgrade road surface on-the-spot test rules " the JTG E60-2008 of the rut type of indoor static rut model.
9. performance method of measurement according to claim 8 is characterized in that, each height continually varying indoor static rut model is made up of 15 to 75 second modules,
The width of this second module is 5cm to 25cm, highly is 3cm, and planeness is less than 0.05mm/m, and thickness error is between-0.2mm to 0.2mm;
Each second module below has the foot screw of three equidistant settings, is used to adjust the levelness and the height of second module.
10. performance method of measurement according to claim 9 is characterized in that, described outdoor measurement road is that top rake is lower than 1.5%, and the rut value is lower than 10mm, and planeness is lower than 2.0mm/m, and length is longer than 500m, and width is greater than the straight line highway section of 3.80m.
11. performance method of measurement according to claim 10 is characterized in that step 104 comprises:
Step 104g, at least begin to be provided with one group of equidistantly outdoor dynamic rut model of height continually varying of being provided with of order in the position of 200m in the distance vehicle starting point of advancing, every group of outdoor dynamic rut model comprises at least seven dissimilar outdoor dynamic rut model, and each outdoor dynamic rut model is by N
2Individual being in second module of the vertically vertical same road Cross Section of road formed, and per two second adjacent modules are in contact with one another;
Step 104h uses the outer dynamically altitude data of rut model of laser scanner or level gauge measuring chamber, the cross section equal interval sampling N at each rut model place
2Individual, the outer dynamically rut degree of depth true value of rut model of counting chamber;
Step 104i, vehicle is advanced along the outdoor measurement road bearing of trend, uses the duplicate measurements of vehicular rut instrument should organize the outdoor dynamic rut model 10 times and the outer dynamically rut degree of depth of rut model of counting chamber;
Step 104j according to the rut degree of depth true value and the measurement gained rut degree of depth of outdoor dynamic rut model, calculates the dynamic measurement error of vehicular rut instrument;
Step 104k changes the rut depth level that this organizes outdoor dynamic rut model by the height that changes second module, and repeating step 104g is to step 104j; The rut depth level of outdoor dynamic rut model is respectively six groups of 0mm～10mm, 10mm～20mm, 20mm～30mm, 30mm～40mm, 40mm～50mm, 50mm～60mm;
Step 104l, the vehicle zero load is advanced along the outdoor measurement road bearing of trend, uses vehicular rut instrument to measure operating range, apart from true value and measurement operating range, calculates vertical distance measuring sensor error according to vehicle ';
Step 104m increases the vehicle seating capacity, and repeating step 104l, seating capacity are respectively 1 people, 2 people and 3 people.
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